| 摘要 |
<p>There is provided an ultraviolet-crosslinking transparent hot-melt pressure-sensitive adhesive and a transparent pressure-sensitive adhesive sheet both of which are of such high quality that they enable the production of laminates at room temperature, while avoiding the necessity of high-temperature and high-pressure treatment by autoclaving, and are less likely to cause plate slippage in the laminate, and a laminate produced using the above described transparent pressure-sensitive adhesive or transparent pressure-sensitive adhesive sheet. The above described transparent pressure-sensitive adhesive includes a (meth)acrylate copolymer and a radical photoinitiator which is at least a hydrogen abstraction radical photoinitiation in an amount of 0.01 to 1.0% by weight based on the (meth)acrylate copolymer. Preferably, the (meth)acrylate copolymer at 130 DEG C has a the melt viscosity of 50000 to 500000 (mPa.s) and a Tg (glass transition temperature) of -20 DEG C or lower. The above described pressure-sensitive adhesive sheet is produced by hot-melt forming such an adhesive and irradiating the adhesive with ultraviolet rays to carry out crosslinking, and is characterized in that the sheet has a holding power at 40 DEG C represented by a slippage length of 1.0 to 13 mm.</p> |
